Federal Register / Vol. 72, No. 67 / Monday, April 9, 2007 / Proposed Rules 17443 

The extensive use of composite 

materials in the design of the 787 wing 

and fuel tank structure is considered a 

major change from conventional and 

traditional methods of construction. 

This will be the first large transport 

category airplane to be certificated with 

this level of composite material for these 

purposes. The applicable airworthiness 

regulations do not contain specific 

standards for post-crash fire safety 

performance of wing and fuel tank skin 

or structure. 

Discussion of Proposed Special 

Conditions 

In order to provide the same level of 

safety as exists with conventional 

airplane construction, Boeing must 

demonstrate that the 787 has sufficient 

post-crash survivability, in the event 

that the wings are exposed to a large 

fuel-fed fire, to enable occupants to 

safely evacuate. Factors in fuel tank 

survivability are the structural integrity 

of the wing and tank, flammability of 

the tank, burnthrough resistance of the 

wing skin, and the presence of autoignition threats during exposure to a 

fire. The FAA assessed post crash 

survival time during the adoption of 

amendment 25–111 for fuselage 

burnthrough protection. Studies 

conducted by and on behalf of the FAA 

indicated that, following a survivable 

accident, prevention of fuselage burnthrough for approximately 5 minutes 

can significantly enhance survivability. 

( See report numbers DOT/FAA/AR–99/ 

57 and DOT/FAA/AR–02/49.) Beyond 

five minutes, there is little benefit, due 

to the effects of the fuel fire itself. That 

assessment was carried out based on 

accidents involving airplanes with 

conventional fuel tanks, and 

considering the ability of ground 

personnel to rescue occupants. In 

addition, AC20–135 indicates that, 

when aluminum is used for fuel tanks, 

the tank should withstand the effects of 

fire for 5 minutes without failure. 

Therefore, to be consistent with existing 

capability and related requirements, the 

787 fuel tanks must be capable of 

resisting a post crash fire for at least 5 

minutes. In demonstrating compliance, 

Boeing must address a range of fuel 

loads from minimum to maximum, as 

well as any other critical fuel load. 

Applicability 

As discussed above, these proposed 

special conditions are applicable to the 

787. Should Boeing apply at a later date 

for a change to the type certificate to 

include another model incorporating the 

same novel or unusual design features, 

these proposed special conditions 

would apply to that model as well 

under the provisions of § 21.101. 

Conclusion 

This action affects only certain novel 

or unusual design features of the 787. It 

is not a rule of general applicability, and 

it affects only the applicant that applied 

to the FAA for approval of these features 

on the airplane. 

List of Subjects in 14 CFR Part 25 

Aircraft, Aviation safety, Reporting 

and recordkeeping requirements. 

The authority citation for these 

Special Conditions is as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701, 

44702, 44704. 

The Proposed Special Conditions 

Accordingly, the Administrator of the 

Federal Aviation Administration (FAA) 

proposes the following special 

conditions as part of the type 

certification basis for the Boeing Model 

787–8 airplane. 

In addition to complying with part 25 

regulations governing the fire-safety 

performance of the fuel tanks, wings, and 

nacelle, the Boeing Model 787–8 must 

demonstrate acceptable post-crash 

survivability in the event the wings are 

exposed to a large fuel-fed ground fire. 

Boeing must demonstrate that the wing and 

fuel tank design can endure an external fuelfed pool fire for at least 5 minutes. This shall 

be demonstrated for minimum fuel loads (not 

less than reserve fuel levels) and maximum 

fuel loads (maximum range fuel quantities), 

and other identified critical fuel loads. 

Considerations shall include fuel tank 

flammability, burn-through resistance, wing 

structural strength retention properties, and 

auto-ignition threats during a ground fire 

event for the required time duration. 

Issued in Renton, Washington, on March 

30, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–6542 Filed 4–6–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27806; Directorate 

Identifier 2006–NM–287–AD] 

RIN 2120–AA64 

Airworthiness Directives; Dassault 

Model Mystere-Falcon 50 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

AD results from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

* * * discovery of interferences between 

the power wire supplying the galley’s coffeemaker and the surrounding structure. These 

interferences might, by chafing and 

degrading the wire insulation, generate short 

circuits between the wire and the aircraft 

ground through the composite cabinet 

structure, without activation of the Circuit 

Breaker (C/B). Several hot spots may then be 

created and generate a large amount of thick 

smokes just behind the cockpit. 

The proposed AD would require 

actions that are intended to address the 

unsafe condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by May 9, 2007. 

ADDRESSES: You may send comments by 

any of the following methods: 

• DOT Docket Web site: Go to 

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Fax: (202) 493–2251. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street, SW., Nassif Building, 

Room PL–401, Washington, DC 20590–

0001. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

• Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the 

instructions for submitting comments. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.gov; or in 

person at the Docket Management 

Facility between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

proposed AD, the regulatory evaluation, 

any comments received, and other 

information. The street address for the 

Docket Office (telephone (800) 647–

5227) is in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 


rwilkins on PROD1PC63 with PROPOSAL
17444 Federal Register / Vol. 72, No. 67 / Monday, April 9, 2007 / Proposed Rules 

98057–3356; telephone (425) 227–1137; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Streamlined Issuance of AD 

The FAA is implementing a new 

process for streamlining the issuance of 

ADs related to MCAI. This streamlined 

process will allow us to adopt MCAI 

safety requirements in a more efficient 

manner and will reduce safety risks to 

the public. This process continues to 

follow all FAA AD issuance processes to 

meet legal, economic, Administrative 

Procedure Act, and Federal Register 

requirements. We also continue to meet 

our technical decision-making 

responsibilities to identify and correct 

unsafe conditions on U.S.-certificated 

products. 

This proposed AD references the 

MCAI and related service information 

that we considered in forming the 

engineering basis to correct the unsafe 

condition. The proposed AD contains 

text copied from the MCAI and for this 

reason might not follow our plain 

language principles. 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2007–27806; Directorate Identifier 

2006–NM–287–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on those comments. 

We will post all comments we 

receive, without change, to http:// 

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA 

Emergency Airworthiness Directive 

2006–0329–E, dated October 25, 2006 

(referred to after this as ‘‘the MCAI’’), to 

correct an unsafe condition for the 

specified products. The MCAI states: 

This Airworthiness Directive (AD) is 

issued following discovery of interferences 

between the power wire supplying the 

galley’s coffee-maker and the surrounding 

structure. These interferences might, by 

chafing and degrading the wire insulation, 

generate short circuits between the wire and 

the aircraft ground through the composite 

cabinet structure, without activation of the 

Circuit Breaker (C/B). Several hot spots may 

then be created and generate a large amount 

of thick smokes just behind the cockpit. 

This AD aims to prevent this kind of 

incident, mandating a wire inspection [for 

damaged wire sleeves], a check for a proper 

clearance and if necessary a wire re-routing. 

The MCAI also requires disabling the 

galley’s coffee-maker, and, in addition 

to wire re-routing, any required 

corrective actions. (Corrective actions 

include replacing worn or defective 

wire sleeves and shortening wires.) You 

may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Dassault has issued Service Bulletins 

F50–471 and F50–456, both dated 

October 25, 2006. The actions described 

in this service information are intended 

to correct the unsafe condition 

identified in the MCAI. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between This AD and the 

MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a NOTE within the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 44 products of U.S. registry. 

We also estimate that it would take 

about 46 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $80 per work-hour. Based on 

these figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$161,920, or $3,680 per product. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. ‘‘Subtitle VII: 

Aviation Programs,’’ describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in ‘‘Subtitle VII, 

Part A, Subpart III, Section 44701: 

General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would not have a 

substantial direct effect on the States, on 

the relationship between the national 

Government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD and placed it in the 

AD docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 


rwilkins on PROD1PC63 with PROPOSAL
Federal Register / Vol. 72, No. 67 / Monday, April 9, 2007 / Proposed Rules 17445 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by adding 

the following new AD: 

Dassault Aviation: Docket No. FAA–2007–

27806; Directorate Identifier 2006–NM–

287–AD. 

Comments Due Date 

(a) We must receive comments by May 9, 

2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Dassault Model 

Mystere-Falcon 50 airplanes; certificated in 

any category; with serial number 275 through 

293 and 295 through 303 and 305 through 

330 inclusive, with the exception of airplanes 

which have already embodied the Dassault 

Service Bulletin F50–456. 

Subject 

(d) Electrical Power; Equipment/ 

Furnishings. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

This Airworthiness Directive (AD) is 

issued following discovery of interferences 

between the power wire supplying the 

galley’s coffee-maker and the surrounding 

structure. These interferences might, by 

chafing and degrading the wire insulation, 

generate short circuits between the wire and 

the aircraft ground through the composite 

cabinet structure, without activation of the 

Circuit Breaker (C/B). Several hot spots may 

then be created and generate a large amount 

of thick smoke just behind the cockpit. 

This AD aims to prevent this kind of 

incident, mandating a wire inspection [for 

damaged wire sleeves], a check for a proper 

clearance and if necessary a wire re-routing. 

The MCAI also requires disabling the galley’s 

coffee-maker, and, in addition to wire rerouting, any required corrective actions. 

(Corrective actions include replacing worn or 

defective wire sleeves and shortening wires.) 

Actions and Compliance 

(f) Unless already done, do the following 

actions. 

(1) Within 50 flight hours or 1 month after 

the effective date of this AD, whichever 

occurs first, disable the galley’s coffee-maker 

by pulling and locking out the circuit breaker 

710HG, as instructed in Dassault Service 

Bulletin F50–471, dated October 25, 2006. 

(2) Within 1,530 flight hours or 24 months 

after the effective date of this AD, whichever 

occurs first, inspect for damaged wire 

sleeves, check their proper clearance, and if 

a discrepancy is found, prior to next flight, 

proceed to all applicable corrective actions as 

indicated in the Accomplishment 

Instructions of Dassault Service Bulletin 

F50–456, dated October 25, 2006. Doing the 

actions specified in this paragraph terminates 

the requirements of paragraph (f)(1) of this 

AD, and after the actions have been done, the 

circuit breaker collar required by paragraph 

(f)(1) of this AD may be removed. 

FAA AD Differences 

Note: This AD differs from the MCAI and/ 

or service information as follows: The MCAI 

does not indicate that doing the actions 

specified in Dassault Service Bulletin F50–

456, dated October 25, 2006, terminates the 

requirement to disable the coffee-maker. This 

AD indicates that doing the actions specified 

in Dassault Service Bulletin F50–456, 

terminates the requirements to disable the 

coffee-maker, and after the actions have been 

done, the circuit breaker collar may be 

removed. 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, Transport Airplane 

Directorate, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

Send information to ATTN: Tom Rodriguez, 

Aerospace Engineer, 1601 Lind Avenue, SW., 

Renton, Washington 98057–3356, telephone 

(425) 227–1137; fax (425) 227–1149. Before 

using any AMOC approved in accordance 

with § 39.19 on any airplane to which the 

AMOC applies, notify the appropriate 

principal inspector in the FAA Flight 

Standards Certificate Holding District Office. 

(2) Airworthy Product: For any 

requirement in this AD to obtain corrective 

actions from a manufacturer or other source, 

use these actions if they are FAA-approved. 

Corrective actions are considered FAAapproved if they are approved by the State 

of Design Authority (or their delegated 

agent). You are required to assure the product 

is airworthy before it is returned to service. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act, 

the Office of Management and Budget (OMB) 

has approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(h) Refer to MCAI European Aviation 

Safety Agency Emergency Airworthiness 

Directive 2006–0329–E, dated October 25, 

2006; Dassault Service Bulletin F50–471, 

dated October 25, 2006; and Dassault Service 

Bulletin F50–456, dated October 25, 2006; for 

related information. 

Issued in Renton, Washington, on March 

30, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–6590 Filed 4–6–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2007–27439; Airspace 

Docket No. 07–AAL–04] 

Proposed Revision of Class E 

Airspace; Red Dog, AK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: This action proposes to revise 

Class E airspace at Red Dog, AK. A 

review of controlled airspace for two 

new Area Navigation (RNAV) Required 

Navigation Performance (RNP) Special 

Instrument Approach Procedures 

(SIAPs) and an RNAV RNP Special 

Departure Procedure (DP), after a recent 

action (06–AAL–40) revealed that a 

small area of controlled airspace is 

required for the Red Dog Airport. 

Adoption of this proposal would result 

in revision of existing Class E airspace 

upward from 1,200 feet (ft.) above the 

surface at Red Dog Airport, AK. 

DATES: Comments must be received on 

or before May 24, 2007. 

ADDRESSES: Send comments on the 

proposal to the Docket Management 

System, U.S. Department of 

Transportation, Room Plaza 401, 400 

Seventh Street, SW., Washington, DC 

20590–0001. You must identify the 

docket number FAA–2007–27439/ 

Airspace Docket No. 07–AAL–04, at the 

beginning of your comments. You may 

also submit comments on the Internet at 

http://dms.dot.gov. You may review the 

public docket containing the proposal, 

any comments received, and any final 

disposition in person in the Dockets 

Office between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The Docket Office (telephone 

1–800–647–5527) is on the plaza level 

of the Department of Transportation 

Nassif Building at the above address. 

An informal docket may also be 

examined during normal business hours 

at the office of the Manager, Safety, 

Alaska Flight Service Operations, 

Federal Aviation Administration, 222 

West 7th Avenue, Box 14, Anchorage, 

AK 99513–7587. 

FOR FURTHER INFORMATION CONTACT: Gary 

Rolf, Federal Aviation Administration, 

222 West 7th Avenue, Box 14, 

Anchorage, AK 99513–7587; telephone 

number (907) 271–5898; fax: (907) 271–

2850; e-mail: gary.ctr.rolf@faa.gov. 

Internet address: http:// 

www.alaska.faa.gov/at. 

SUPPLEMENTARY INFORMATION: 


rwilkins on PROD1PC63 with PROPOSAL